Micro Evolution

Microevolution refers to the small changes in an organism while macroevolution refers to the cumulative changes in an organism that lead to speciation.

• True

• False

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Microevolution is best described as:

• Small-scale changes within a species over time

• The process by which new species are formed

• The extinction of species

• The genetic drift in large populations

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Which of the following is an example of microevolution?

• The development of antibiotic resistance in bacteria

• The extinction of dinosaurs

• The formation of new species of finches

• The mass extinction event at the end of the Cretaceous period

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Microevolution occurs at the level of:

• Species

• Communities

• Populations

• Ecosystems

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Which mechanism is NOT typically involved in microevolution?

• Natural selection

• Genetic drift

• Gene flow

• Plate tectonics

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The change in allele frequencies in a population over time is known as:

• Macroevolution

• Microevolution

• Speciation

• Extinction

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Which of the following can cause microevolution?

• Mutation

• Genetic drift

• Natural selection

• All of the above

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In a population of beetles, a mutation causes some beetles to be green instead of brown. This is an example of:

• Macroevolution

• Microevolution

• Speciation

• Extinction

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Which of the following statements about microevolution is true?

• It can lead to the formation of new species

• It involves large-scale changes

• It occurs over a short period of time

• It does not affect allele frequencies

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The Hardy-Weinberg principle is used to:

• Predict the genetic variation of a population at equilibrium

• Describe the process of natural selection

• Explain the extinction of species

• Calculate the rate of mutation